When I enter into Projectplace I see my overview and have the possibility to select the tab contact.
It would be very usefull to be able to have a link between contact created at the project level and the one at the overview level. What I suggest is to have the possibility when we create contact at the project level to add one tick box to define he we want to inheritate of this contact at the overview level or not to avoid creating doubloon.
By the way the same issue exist cross-projects. As we all know unicity of data is key o ensure the consistency.
Lets elaborate on this.